/*******************************************************************************
 * Copyright (c) 2009, 2020 Mountainminds GmbH & Co. KG and Contributors
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *    Marc R. Hoffmann - initial API and implementation
 *
 *******************************************************************************/
package com.andjacoco.demo;

import org.jacoco.core.analysis.Analyzer;
import org.jacoco.core.analysis.IClassCoverage;
import org.jacoco.core.analysis.ICoverageVisitor;
import org.jacoco.core.data.ExecutionDataStore;

import java.io.File;
import java.io.IOException;
import java.io.PrintStream;

/**
 * This example reads Java class files, directories or JARs given as program
 * arguments and dumps information about the classes.
 */
public final class ClassInfo implements ICoverageVisitor {

    private final PrintStream out;
    private final Analyzer analyzer;

    /**
     * Creates a new example instance printing to the given stream.
     *
     * @param out stream for outputs
     */
    public ClassInfo(final PrintStream out) {
        this.out = out;
        analyzer = new Analyzer(new ExecutionDataStore(), this);
    }

    /**
     * Run this example with the given parameters.
     *
     * @param args command line parameters
     * @throws IOException in case of error reading a input file
     */
    public void execute(final String[] args) throws IOException {
        for (final String file : args) {
            analyzer.analyzeAll(new File(file));
        }
    }

    public void visitCoverage(final IClassCoverage coverage) {
        out.printf("class name:   %s%n", coverage.getName());
        out.printf("class id:     %016x%n", Long.valueOf(coverage.getId()));
        out.printf("instructions: %s%n", Integer
                .valueOf(coverage.getInstructionCounter().getTotalCount()));
        out.printf("branches:     %s%n",
                Integer.valueOf(coverage.getBranchCounter().getTotalCount()));
        out.printf("lines:        %s%n",
                Integer.valueOf(coverage.getLineCounter().getTotalCount()));
        out.printf("methods:      %s%n",
                Integer.valueOf(coverage.getMethodCounter().getTotalCount()));
        out.printf("complexity:   %s%n%n", Integer
                .valueOf(coverage.getComplexityCounter().getTotalCount()));
    }

    /**
     * Entry point to run this examples as a Java application.
     *
     * @param args list of program arguments
     * @throws IOException in case of errors executing the example
     */
    public static void main(final String[] args) throws IOException {
        new ClassInfo(System.out).execute(new String[]{"D:\\test\\FrameButton.class"});
    }

}
